package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class JDBCDemo9 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username = scan.nextLine();
        System.out.println("请输入密码：");
        String password = scan.nextLine();
        try(Connection conn  = DBUtil.getConnection();) {
            String sql = "SELECT id,username,password,nickname,age " +
                         "FROM userinfo " +
                         "WHERE username = ? " +
                         "AND password = ?";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1,username);
            ps.setString(2,password);
            ResultSet rs = ps.executeQuery();
            if(rs.next()){
                String nickname = rs.getString("nickname");
                System.out.println(nickname+" 登录成功");

            }else {
                System.out.println("登录失败");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
